"Google did agree to license patents deemed to be "essential" for rival mobile devices such as Apple Inc.'s iPhone, Research in Motion Ltd.'s BlackBerry and smartphones running on a Microsoft Corp.'s Windows software. Some of the patents in question came as part of Google's $12.4 billion acquisition of device maker Motorola Mobility Holdings earlier this year."

It's funny that they've gone after them on the (relatively less interesting) patent question and not on the (much more important) search/video/web monopoly question. What Google is doing vis-a-vis locking out Microsoft from access to Gmail and YouTube is quite similar to what the DoJ sued Microsoft over, back in the 1990s.